Geotechnical properties and preliminary assessment of sediment stability on the continental slope of the northwestern Alboran Sea |
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Authors: | J Baraza G Ercilla H J Lee |
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Institution: | (1) Instituto Ciencias del Mar CSIC, Paseo Nacional s/n, 08039 Barcelona, Spain;(2) U.S. Geological Survey, 345 Middlefield Road, 94025 Menlo Park, CA, USA |
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Abstract: | Laboratory analysis of core samples from the western Alboran Sea slope reveal a large variability in texture and geotechnical properties. Stability analysis suggests that the sediment is stable under static gravitational loading but potentially unstable under seismic loading. Slope failures may occur if horizontal ground accelerations greater than 0.16g are seismically induced. The, Alboran Sea is an active region, on which earthquakes inducing accelerations big enough to exceed the shear strength of the soft soil may occur. Test results contrast with the apparent stability deduced from seismic profiles. |
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